Completed
Last Updated: 11 Aug 2025 07:05 by ADMIN
Release 2025 Q3 (Aug)
Created by: Emily
Comments: 0
Category: ComboBox
Type: Bug Report
3

I have a Kendo ComboBox() on CountryCode property that has [MaxLength(2)] data annotation on the property in the ViewModel. This is limiting the filtering on the ComboBox and I can't type more than 2 characters in the component. Please see the sample project for the reproduceable issue.

Upon inspecting the markup generated by the Kendo ComboBox(), I'm seeing that there are 2 inputs being generated and maxlength HTML attribute is applied to both.

  • The first input tag is displayed to the user and used for filtering. This should NOT have maxlength HTML attribute since it incorrectly limits the number of characters the user can filter by.
  • The second input tag is a hidden input that passes the selected data value for form submission. This correctly has the maxlength HTML attribute to still enforce validation.

When I manually removed the maxlength HTML attribute from the first input tag, this fixed the filtering of the ComboBox while still retaining the validation on the second input tag.


Please review the markup generated by the Kendo ComboBox() and see if it can be fixed to remove maxlength from the first input tag.

Expected behavior:

If [MaxLength] is applied to a property, it should generate a markup that allows the user to filter without character limitation while still validating against the selected data value.

Completed
Last Updated: 08 Aug 2025 07:05 by ADMIN
Release 2025 Q3 (Aug)

### Bug report

When the Input() option of the Grid's pager is enabled, the page number buttons are displayed, too.

### Reproduction of the problem

1) Create a Grid and enable the Input() option of the pager.

2) The pager displays both the page number buttons and the page numeric input:

### Expected/desired behavior

When the numeric input is enabled, the page number buttons must not be displayed.

### Environment

* **Telerik UI for ASP.NET MVC version: 2025.2.702

 
Completed
Last Updated: 28 Jul 2025 10:36 by ADMIN
Created by: Jonathan
Comments: 1
Category: Installer and VS Extensions
Type: Bug Report
0

Upgrade wizard fails with error:

An error occurred while running the wizard.

Error executing custom action Telerik.KendoUI.Mvc.VSX.Actions.MultiProjectUpdateMasterPageAction: System.IO.DirectoryNotFoundException: Could not find a part of the path 'C:\Users\chyejo\AppData\Roaming\Telerik\Updates\telerik.ui.for.aspnetmvc.hotfix.2023.3.1114.commercial\styles\kendo.common-font-icons'.
   at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath)
   at System.IO.FileSystemEnumerableIterator`1.CommonInit()
   at System.IO.FileSystemEnumerableIterator`1..ctor(String path, String originalUserPath, String searchPattern, SearchOption searchOption, SearchResultHandler`1 resultHandler, Boolean checkHost)
   at System.IO.Directory.GetFiles(String path, String searchPattern)
   at Telerik.VSX.Web.Actions.CommonStyleRetrievers.SpecificSkinRetriever.GetCommonStyleFilesRecursive(String name)
   at Telerik.VSX.Web.Actions.CommonStyleRetrievers.SpecificSkinRetriever.CheckSkinExists()
   at System.Linq.Enumerable.First[TSource](IEnumerable`1 source, Func`2 predicate)
   at Telerik.VSX.Web.Actions.CommonStyleRetrievers.KendoSkinRetriever.GetSkin()
   at Telerik.KendoUI.Mvc.VSX.Actions.UpdateMasterPageAction.GetSkin(String skinName)
   at Telerik.KendoUI.Mvc.VSX.Actions.AdvancedUpdateMasterPageAction.RetrieveMasterPageSettingsUpgradeInfo(IPropertyDataDictionary arguments, IProjectWrap project)
   at Telerik.KendoUI.Mvc.VSX.Actions.UpdateMasterPageAction.Execute(WizardContext wizardContext, IPropertyDataDictionary arguments, IProjectWrap projectWrap)
   at Telerik.VSX.Actions.MultiProjectActionBase`1.Execute(WizardContext wizardContext, IPropertyDataDictionary arguments)
   at Telerik.VSX.WizardEngine.ActionManager.ExecActions()
Completed
Last Updated: 28 Jul 2025 10:07 by ADMIN
Release 2025 Q3 (Aug)

### Bug report

When the Form contains multiple Upload editros, which are required, the Form's validator validates only the first Upload editor.

### Reproduction of the problem

1) Create a Form with two Upload editors.

2) Make both Uploads required.

3) Submit the Form without uploaded files.

4) The validation for required triggers only for the first Upload editor.

A Dojo sample for reproduction: https://dojo.telerik.com/VJTiYYhE

### Expected/desired behavior

All Upload editors in the Form must be validated.

### Workaround

  • Handle the Validate event of the Form.
  • Verify if the "StartingFile" Upload contains a file for upload using the getFiles() method.
  • Call the validateInput() method of the Form's Validator on the "StartingFile" input element to trigger the validation.
function onValidate(e) {
        var uploadComponent = $("#StartingFile").data("kendoUpload"); // get a reference to the Upload editor
        var form = e.sender;
        var validator = form.validator;
        if (uploadComponent.getFiles().length == 0) { // check the selected files for upload
            validator.validateInput($("input[name='StartingFile']")); // trigger the "required" validation, if no files are selected for upload
        }
}

### Environment

* **Kendo UI version: 2025.2.702
* **jQuery version: 3.7.1
* **Browser: [all]

Completed
Last Updated: 25 Jul 2025 09:55 by ADMIN
Release 2025 Q3 (Aug)
Created by: David
Comments: 0
Category: Form
Type: Bug Report
0

Bug report

Regression introduced in 2024.4.1112.

Reproduction of the problem

  1. Run this Dojo example - https://dojo.telerik.com/lhLEDEve

Current behavior

The gutter values are ignored:

$("#exampleform").kendoForm({
                formData: {
                    FirstName: "John",
                    LastName: "Doe",
                    Email: "john.doe@email.com",
                    Country: "1",
                    City: "Strasbourg",
                    AddressLine: ""
                },
                layout: "grid",
                grid: {
                    cols: 2,
                    **gutter: 50**
                },
                items: [
                    {
                        type: "group",
                        label: "Personal Information",
                        layout: "grid",
                        grid: { cols: 1, **gutter: 50** },
                 //...

Expected Behavior

The gutter values are applied to the Form.

Workaround:

Set the values through CSS:

<style>
 /*columns gap */
  .k-form .k-form-layout {
    column-gap: 50px;
  }
 /*rows margin*/
  .k-form-md .k-form-field, .k-form-md .k-form-buttons {
    margin-top: 50px;
  }
</style>

Environment

  • Kendo UI version: 2025.1.227
  • Browser: [all]
Completed
Last Updated: 18 Jul 2025 12:52 by ADMIN
Created by: Peter
Comments: 2
Category: UI for ASP.NET MVC
Type: Feature Request
4
The Readonly() property is only available for the Switch control.  Please make available the Readonly() property for the TextBox, ComboBox, DropDownList and MultiSelect as well.
Completed
Last Updated: 19 Jun 2025 13:14 by ADMIN
Release 2025 Q3 (Aug)
Created by: Gertjan
Comments: 0
Category: Sortable
Type: Bug Report
0

Describe the bug
Setting the Sortable "cursor" option results in inline styles being applied through the _setCursor function in kendo.all.min.js. This causes a CSP related js exception.

To reproduce

  1. On a page with strict Content-Security-Policy enabled, drag and drop an item using the example below:
<ul id="sortable">
    <li>ItemA1</li>
    <li>ItemA2</li>
    <li>ItemA3</li>
</ul>

<script>
    $("#sortable").kendoSortable({
        cursor: "move"
    });
</script>

Expected behavior
No inline styles should be added, to ensure CSP compatibility.

Actual behavior
A js error related to inline styles is thrown.

Affected browsers (please remove the unneeded items)

  • All

Product Version
2024.4.1112

Completed
Last Updated: 19 Jun 2025 13:13 by ADMIN
Release 2025 Q3 (Aug)

Bug report

Reproduction of the problem

Dojo example: https://dojo.telerik.com/uGitesaF

Current behavior

When the DropDownList has an initial value, the floating label overlaps with the text.

Expected/desired behavior

The label should be displayed above the DropDownList.

Workaround: refresh the floating label in the dataBound event handler of the component:

e.sender.label.floatingLabel.refresh()

Environment

  • Kendo UI version: 2023.1.314
  • jQuery version: x.y
  • Browser: [all]
Completed
Last Updated: 29 May 2025 13:11 by ADMIN
Created by: Ed
Comments: 2
Category: UI for ASP.NET MVC
Type: Feature Request
1

When I am trying to use your components, I have to look things up on your web site.  Considering you develop web site components, I would think that your site would behave very well.  What I find is that I am often frustrated by web site.  Here is an example:
https://docs.telerik.com/aspnet-mvc/api/kendo.mvc.ui.fluent/taskboardbuilder?_gl=1*3hzp1t*_ga*MTEwODg5NTUzNy4xNjc5MDc0ODQy*_ga_9JSNBCSF54*MTcxNzE3MjQ2NS4zNDMuMS4xNzE3MTczMzA1LjE2LjAuMA..*_gcl_aw*R0NMLjE3MTY0NzU0MDYuQ2owS0NRancwcnV5QmhEdUFSSXNBTlNaM3dwOXNTVTZDZC1rU0ViRVdYNDNjYVV2U0pnOWZOcFpHSk10YzVmOWhOX3hZY3owQlppb045RWFBbVpnRUFMd193Y0I.*_gcl_dc*R0NMLjE3MTY0NzU0MDYuQ2owS0NRancwcnV5QmhEdUFSSXNBTlNaM3dwOXNTVTZDZC1rU0ViRVdYNDNjYVV2U0pnOWZOcFpHSk10YzVmOWhOX3hZY3owQlppb045RWFBbVpnRUFMd193Y0I.*_gcl_au*MTAyOTkxNjgzOC4xNzEyOTMxMDQ3&_ga=2.233747739.449664680.1716902667-1108895537.1679074842&_gac=1.124170360.1714792673.Cj0KCQjwltKxBhDMARIsAG8KnqWeETNM6gbjk2Jt1wTc9LrEO5gPp1cwyMu5bYB9fTjPB6DpZ_mC0MsaAixAEALw_wcB

On this page you basically have three main sections:
The "Api reference" list on the left with a vertical scroll bar.
The "IN THIS ARTICLE" list on the right.  No scrollbar
The actual api methods in the middle which scrolls with the main scroll bar.

But the "IN THIS ARTICLE" list section on the right never scrolls.  I would like to be able to scroll through the list to see possible methods, but I can't.  I know they are there to help navigate to a method but since a bunch of methods are basically cut off .....

Remember that first impressions aren't the only impression.  You can make the sale with your demos, but can you keep the customer with your documentation?

 

 

Completed
Last Updated: 14 Mar 2025 11:51 by ADMIN
Release 2025 Q2 (May)
Created by: Frank
Comments: 0
Category: Signature
Type: Bug Report
0

Bug report

Clearing the value with the Signature "clear" button does not trigger the widget's change event.

Reproduction of the problem

Run the following Dojo example: https://dojo.telerik.com/KhlVWvam

  1. Draw something in the Signature
  2. Click on the "clear" button

Expected

The change event fires.

Actual

The change event does not fire.

Environment

**Kendo UI version: 2025.1.211
**Browser: [all]

Completed
Last Updated: 26 Feb 2025 17:52 by ADMIN
Release 2025 Q2 (May)

Bug report

When the kendo js references are rendered as module, the licensing banner and watermark appear, even when a valid license license key has been installed.

Reproduction of the problem

<link href="https://kendo.cdn.telerik.com/themes/10.2.0/default/default-ocean-blue.css" rel="stylesheet" type="text/css" />
    
<script src="https://code.jquery.com/jquery-3.7.1.min.js" type="module"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/pdf.js/4.8.69/pdf.mjs" type="module"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/pdf.js/4.8.69/pdf.worker.mjs" type="module"></script>
<script src="https://cdn.kendostatic.com/2025.1.211/js/kendo.all.min.js" type="module"></script>
<script src="https://cdn.kendostatic.com/2025.1.211/js/kendo.aspnetmvc.min.js" type="module"></script>

Expected

No banner and watermark appears.

Actual

A banner and a watermark appears.

Workaround: reference a js file containing your script key after the kendo js files:

<script src="~/Scripts/telerik-license.js" type="module"></script>

Environment

**Kendo UI version: 2025.1.211
**Browser: [all]

Completed
Last Updated: 11 Feb 2025 10:59 by ADMIN

Bug report

When the Kendo UI Grid is configured to have endless scrolling and an item is updated on the first page, the scrollbar is reset. If an update is done on a page after the first one, the scroll is correctly persisted.

Reproduction of the problem

1. Set a grid with an endless scroll.

2. Scroll down (without entering the second page).

3. Update an item on the first page.

4. The scroll is reset.

Dojo sample for reference:

https://dojo.telerik.com/EcUKIrAK

Environment

* **Kendo UI version:** 2021.1.330
* **jQuery version:** 1.12.4
* **Browser:** [all]

Completed
Last Updated: 14 Jan 2025 08:02 by ADMIN
Release 2025 Q1 (Feb)

Currently, the tool name is not added into the HTML structure of the created Editor's tool:

Here is a Dojo example:

https://dojo.telerik.com/AvoNOKOr

Is it possible to include the specified "name" in the button's class, so the custom tools can be selected by class name for further customization?

Completed
Last Updated: 07 Jan 2025 08:35 by ADMIN
Release 2025 Q1 (Feb)

Bug Report

The SaveButton() method does not render the Cancel Command button in Grid's Toolbar Template

Reproduction of the issue

  1. Declare the Grid's Toolbar.Template() API configuration with an Action or Delegate
  2. Notice, that Grid's Toolbar does not explicitly add the Cancel Command button.
@(Html.Kendo().Grid<GridModel>()
    ...
   .Name("grid")
   .ToolBar(t =>
      {
          t.Template(@<text>
            <span class="group-buttons">
	         @item.SaveButton();
            </span>
          </text>);
  })
)

Current behaviour

The SaveButton() method does not render the Cancel Command in Grid's Toolbar Template.

Expected behavior

The SaveButton() method should render the Cancel Command in Grid's Toolbar Template.

Workaround

A possible way to circumvent this behavior would be to explicitly declare both the Save and Cancel buttons as independent Button components via the Toolbar.ClientTemplate() API configuration.

@(Html.Kendo().Grid<GridModel>()
	...
	.Name("grid")
        .ToolBar(t =>
	{
		t.ClientTemplate(Html.Kendo().Template()
				.AddHtml(@<text>
					<span class="group-buttons">
				</text>)
				.AddComponent(saveBtn => saveBtn
					.Button()
					.Name("saveBtn")
					.Icon("check")
					.HtmlAttributes(new { @class = "k-grid-save-changes", style="margin-right: 2%;" })
					.Content("Save Changes")
				)
				.AddComponent(cancelBtn => cancelBtn
					.Button()
					.Icon("cancel")
					.Name("cancelBtn")
					.HtmlAttributes(new { @class = "k-grid-cancel-changes" })
					.Content("Cancel Changes")
				)
				.AddHtml("</span>")
		);
	})
)
Completed
Last Updated: 20 Dec 2024 14:08 by ADMIN
Release 2025 Q1 (Feb)

Bug report

Inline Editor removes Toolbar items when it is set as resizable.

Reproduction of the problem

  1. Open the following dojo.
  2. Set the resizable configuration to true.
  3. Hide and show the Editor's Toolbar numerous times.

Current behavior

The Inline Editor's Toolbar items are removed each time the ToolBar window is re-rendered.
EditorResizable

Expected/desired behavior

The Inline Editor's Toolbar items should not be removed each time the ToolBar window is re-rendered.

Environment

  • Kendo UI version: 2024.2.514
  • Browser: [all]
Completed
Last Updated: 10 Dec 2024 14:17 by ADMIN
Release 2025 Q1 (Feb)
Created by: Vugar
Comments: 0
Category: UI for ASP.NET MVC
Type: Bug Report
1

Describe the bug
The k-toolbar-solid class is not rendered in the Grid's toolbar. As a result, the theme background color is not applied to the toolbar.

To reproduce
Steps to reproduce the behavior:

  1. Go to 'Overview demo'
  2. Inspect the toolbar

Expected behavior
The k-toolbar-solid class should be applied to the toolbar's div element, as in the Kendo UI for jQuery Grid and the Core Grid.

The workaround is to add the class with jQuery, for example in the DataBound event of the Grid:

<script>
    function onGridDataBound(e) {
        $(e.sender.wrapper).find(".k-toolbar").addClass("k-toolbar-solid");
    }
</script>

Affected browsers (please remove the unneeded items)

  • All

Product Version
2024.4.1112

Completed
Last Updated: 28 Nov 2024 09:46 by ADMIN

Bug report

Reproduction of the problem

Dojo: https://dojo.telerik.com/iMuMedOd

  1. Focus a cell and use one of the following shortcuts: Ctrl + B (Bold), Ctrl + I (Italic)

Current behavior

A js exception is thrown:
Uncaught TypeError: Cannot read property 'click' of undefined
kendo.all.js:168073

Expected/desired behavior

With the toolbar disabled the shortcuts should do nothing. There should be no exceptions.

Environment

  • Kendo UI version: 2021.2.616
  • jQuery version: x.y
  • Browser: [all ]
Completed
Last Updated: 11 Nov 2024 13:16 by ADMIN
Release 2024 Q4 (Nov)
Created by: Irvin
Comments: 0
Category: DateRangePicker
Type: Bug Report
0

Bug report

There is a difference in behavior between the wrappers (MVC and Core) and the Kendo UI for jQuery DateRangePicker. See the following dojo example, which shows initializing the component with a null value for the End date: https://dojo.telerik.com/IkAMUJoG/2

In contrast, the MVC and Core helpers display the Start value as End value.

Reproduction of the problem

  1. Run this REPL: https://netcorerepl.telerik.com/GoaDYoFu45uqxdEF31

Current behavior

The End value is the same as the Start value.

Expected/desired behavior

The End value is null.

Consider also the scenario, where the Range configuration is not set and the component gets the Start and End values from the model, and the value of the EndDate field is null:

@(Html.Kendo().DateRangePickerFor(m => m.StartDate, m => m.EndDate )
    .Name("dateRangePicker")
)

Environment

  • Kendo UI version: 2024.3.806
  • jQuery version: x.y
  • Browser: [all]
Completed
Last Updated: 11 Nov 2024 13:15 by ADMIN
Release 2024 Q4 (Nov)

Bug report

The TabStrip Item Action() method is not loading content correctly.

Reproduction of the problem

  1. The configuration of the TabStrip, including the Action method:
    @(Html.Kendo().TabStrip() .Name("tabs") .Items(strip => { strip.Add().Text("Back").Action("About", "Home"); // ...
  2. Click on the tab.

Current behavior

For kendo.version '2024.3.806', when the tab is clicked, the controller method does not load from the Action().

Expected/desired behavior

For previous versions, like '2023.2.718', when the tab is clicked, the URL from the action method is loaded into the browser URL.

Environment

  • Telerik UI for ASP.NET version: 2024.3.806
  • Browser: [all ]
Completed
Last Updated: 11 Nov 2024 06:52 by ADMIN
Release 2024 Q4 (Nov)

Bug report

The Scheduler is not rendered correctly when the Custom Toolbar is declared with a Template component

Reproduction of the problem

Open the following demo and notice that the Scheduler has not been rendered accordingly.

Current behavior

The Scheduler is not rendered accordingly.

Expected/desired behavior

The Scheduler should be rendered accordingly.

The issue is a regression starting with 2024.3.1015

Environment

  • Kendo UI version: 2024.3.1015
  • Browser: [all ]
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